Magnetic QuietShape® Fraction Tiles - Set of 67 Students have an excellent visual when adding and subtracting fractions using this set of tiles with fraction denominations clearly marked on each piece. Includes whole,-1/2, 1/3,-1/4, 1/5, 1/6, 1/8, 1/10, 1/12, and 1/16. Made of durable QuietShape® foam and backed with strong magnets. Set of 67.